nvenc fails to compile with Nvidia video SDK 6.0 with the following error:

In file included from ../../gst-libs/gst/gl/gstgl_fwd.h:26:0,
                 from ../../gst-libs/gst/gl/gl.h:29,
                 from gstnvbaseenc.c:34:
../../gst-libs/gst/gl/glprototypes/base.h:265:23: error: unknown type name 'GLsizeiptr'
                       GLsizeiptr   size,
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/base.h:270:23: error: unknown type name 'GLintptr'
                       GLintptr   offset,
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/base.h:271:23: error: unknown type name 'GLsizeiptr'
                       GLsizeiptr   size,
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/base.h:327:38: error: unknown type name 'GLintptr'
                      (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access))
                                      ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/base.h:327:55: error: unknown type name 'GLsizeiptr'
                      (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access))
                                                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/eglimage.h:49:23: error: unknown type name 'GLeglImageOES'
                       GLeglImageOES    image))
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/eglimage.h:52:23: error: unknown type name 'GLeglImageOES'
                       GLeglImageOES    image))
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/shaders.h:214:23: error: unknown type name 'GLchar'
                       GLchar* name))
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/shaders.h:219:23: error: unknown type name 'GLchar'
                       GLchar* source))
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/shaders.h:268:29: error: unknown type name 'GLchar'
                       const GLchar* name))
                             ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/shaders.h:276:23: error: unknown type name 'GLchar'
                       GLchar* name))
                       ^
../../gst-libs/gst/gl/gstglapi.h:112:24: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
                        ^
../../gst-libs/gst/gl/glprototypes/sync.h:27:22: error: expected specifier-qualifier-list before 'GLsync'
 GST_GL_EXT_FUNCTION (GLsync, FenceSync,
                      ^
../../gst-libs/gst/gl/gstglapi.h:112:3: note: in definition of macro 'GST_GL_EXT_FUNCTION'
   ret (GSTGLAPI *name) args;
   ^
gstnvbaseenc.c: In function '_get_supported_input_formats':
gstnvbaseenc.c:176:12: error: 'NV_ENC_BUFFER_FORMAT_NV12_TILED16x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_NV12_TILED16x16:
            ^
gstnvbaseenc.c:176:12: note: each undeclared identifier is reported only once for each function it appears in
gstnvbaseenc.c:177:12: error: 'NV_ENC_BUFFER_FORMAT_NV12_TILED64x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_NV12_TILED64x16:
            ^
gstnvbaseenc.c:181:12: error: 'NV_ENC_BUFFER_FORMAT_YV12_TILED16x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_YV12_TILED16x16:
            ^
gstnvbaseenc.c:182:12: error: 'NV_ENC_BUFFER_FORMAT_YV12_TILED64x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_YV12_TILED64x16:
            ^
gstnvbaseenc.c:186:12: error: 'NV_ENC_BUFFER_FORMAT_IYUV_TILED16x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_IYUV_TILED16x16:
            ^
gstnvbaseenc.c:187:12: error: 'NV_ENC_BUFFER_FORMAT_IYUV_TILED64x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_IYUV_TILED64x16:
            ^
gstnvbaseenc.c:191:12: error: 'NV_ENC_BUFFER_FORMAT_YUV444_TILED16x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_YUV444_TILED16x16:
            ^
gstnvbaseenc.c:192:12: error: 'NV_ENC_BUFFER_FORMAT_YUV444_TILED64x16' undeclared (first use in this function)
       case NV_ENC_BUFFER_FORMAT_YUV444_TILED64x16:{
            ^
  CCLD     libgstfbdevsink.la
Makefile:909: recipe for target 'libgstnvenc_la-gstnvbaseenc.lo' failed
make[3]: *** [libgstnvenc_la-gstnvbaseenc.lo] Error 1


Compilation with SDK version 5.0 works though.